22-400 Closed Top PP Screw Cap With Septa

1) Description

22-400 Closed Top PP Cap With Septa is a high-quality laboratory accessory designed to provide sealing protection for a variety of sample vials. This cover is made from chemical-resistant polypropylene (PP) material, ensuring long-term stability and durability. Built-in septa provide additional airtightness to prevent liquid leakage and protect samples from air contamination. The size of 22-400 means that it can adapt to bottles with a diameter of 400 threads, and is one of the commonly used laboratory consumables.

2) Application

22-400 Closed Top PP Cap With Septa are widely used in chemical, biological and medical research fields, especially in the long-term storage and transportation of liquid samples. These caps are commonly used for gas chromatography (GC), liquid chromatography (HPLC) vials, as well as vials used in environmental monitoring, clinical diagnostics, and food safety testing. Its tight sealing performance is particularly important to prevent the loss of volatile organic compounds (VOCs), thereby ensuring the accuracy and reliability of sample analysis. In addition, this high and low temperature resistant lid is particularly suitable for experiments that require heat treatment or frozen storage of samples.

3)Features

▶ Cap is suitable for 20ml sample vial with 22-400 screw thread.
▶ Polypropylene caps and a friction fit PTFE silicone septa, chemically resistant and highly resealable Silicone guarantees good sealing and PTFE guarantees corrosion resistance.
▶ Both cap and liner can be washed, heated or autoclaved depending upon your application.